RRUK
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Member Since: 16 Aug 2005
Location: UK
Posts: 635
  
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Morning all and HNY to you.
My D3 has logged the following fault on my IID. Symptoms are that I put it in reverse, rear parking sensor bleeps continuously then goes off, then on again continuously. The light on the dash button stay lit (not flashing).
Fault code is
• U0159-87 (2E) Lost communication with parking assist control module - Bus signal/message failure - missing a message
The battery is good, charging at 14.5V, rests at 12.5V, terminals are tight, no other faults logged.
Any ideas? It would be easier if it pointe to a particular PDC sensor! 1998 Defender 110 TUM HS FFR Hard Top XD WOLF
2016 Discovery 4 HSE
1982 Series 3 2.25 Petrol Hard top- Oscar, as featured in Classic Land Rover Magazine for 7 months
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 4th Jan 2021 9:58 am |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10359
  
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You need to read the live values of the sensors (e.g with IID)
2.5m is maximum with no obstacle.
I suspect you will have one showing much less, when not parked near anything.
replace it
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| 4th Jan 2021 1:05 pm |
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RRUK
Site Supporter
Member Since: 16 Aug 2005
Location: UK
Posts: 635
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Thanks for the tip Pete, I shall look into it with the IID 1998 Defender 110 TUM HS FFR Hard Top XD WOLF
2016 Discovery 4 HSE
1982 Series 3 2.25 Petrol Hard top- Oscar, as featured in Classic Land Rover Magazine for 7 months
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| 4th Jan 2021 3:01 pm |
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Lrsg
Member Since: 10 May 2020
Location: Norway
Posts: 77
 
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I get this fault repeatedly even if all the sensors are working. Whenever I have had a sensor which actually didn't work (with the attendant bleeping etc. as you describe), there was a fault code pointing to the one which was out order. Not much help, but I don't think you can rely on U0159 as a clue either.
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| 4th Jan 2021 3:03 pm |
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RRUK
Site Supporter
Member Since: 16 Aug 2005
Location: UK
Posts: 635
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Well, checked the live values, all showing 2.5m.
Same fault code keeps appearing, now wondering if it is the module itself? 1998 Defender 110 TUM HS FFR Hard Top XD WOLF
2016 Discovery 4 HSE
1982 Series 3 2.25 Petrol Hard top- Oscar, as featured in Classic Land Rover Magazine for 7 months
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| 4th Jan 2021 4:34 pm |
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RRUK
Site Supporter
Member Since: 16 Aug 2005
Location: UK
Posts: 635
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Forgot to mention, I can also hear every single sensor clicking too. But if the module was goosed I wouldn't expect that?
Maybe a hard reset is called for.
Any ideas from anyone? 1998 Defender 110 TUM HS FFR Hard Top XD WOLF
2016 Discovery 4 HSE
1982 Series 3 2.25 Petrol Hard top- Oscar, as featured in Classic Land Rover Magazine for 7 months
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| 4th Jan 2021 5:16 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10359
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RRUK wrote:Well, checked the live values, all showing 2.5m.
Same fault code keeps appearing, now wondering if it is the module itself?
Were they reading that when in reverse, park brake off, and with the continuous tone ?
You can also test each sensor individually by putting your leg in front of them (standing side on), check they all work and that one isn't giving odd results
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| 4th Jan 2021 6:05 pm |
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RRUK
Site Supporter
Member Since: 16 Aug 2005
Location: UK
Posts: 635
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Pete, yes.
Now, got in the car this morning and no problems at all. Makes no sense! 1998 Defender 110 TUM HS FFR Hard Top XD WOLF
2016 Discovery 4 HSE
1982 Series 3 2.25 Petrol Hard top- Oscar, as featured in Classic Land Rover Magazine for 7 months
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| 5th Jan 2021 3:03 pm |
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Prette
Member Since: 16 Mar 2020
Location: Previously Stoke-ST4 (pre-pandemic), Mostly The Hague (NL) partially Lyngby (DK) certainly somewhere
Posts: 160
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One of your sensors might be giving up. First intermittent, then permanent. Have a look already which is going and be prepared.
The problem might as well be trapped water/damp which in the winter f  all the connections.
get the realtime stream data and see if any sensor is changing too rapidly the value. Sometimes it is too quick to bip, but the live data shows you.
Mid last year the right center front went kaput just 3 days ago, it was time for the right outer front. 
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| 5th Jan 2021 3:13 pm |
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RRUK
Site Supporter
Member Since: 16 Aug 2005
Location: UK
Posts: 635
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The issue keeps happening. One day it works OK, the next it just beeps at me.
Does anyone know if you have to remove the rear bumper in order to check each of the sensors and their wiring?
Is there a common place the wiring might be wearing through and shorting? 1998 Defender 110 TUM HS FFR Hard Top XD WOLF
2016 Discovery 4 HSE
1982 Series 3 2.25 Petrol Hard top- Oscar, as featured in Classic Land Rover Magazine for 7 months
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| 12th Jan 2021 9:47 am |
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Prette
Member Since: 16 Mar 2020
Location: Previously Stoke-ST4 (pre-pandemic), Mostly The Hague (NL) partially Lyngby (DK) certainly somewhere
Posts: 160
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Which codes are you getting from the PDC module? It might telll you which sensor is failing.
The U code you are getting shouldn't be the reason of fail.
Which buzz is sounding (front or rear)?
You could possibly check the two outer sensors without remove the bumper. The two center ones, i am afraid you must take the bumper out.
Not sure if there is any place more common to fail. In my case the loom was rubbing on the harmonic dumper. Someone must have misplaced it.
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| 12th Jan 2021 11:56 am |
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RRUK
Site Supporter
Member Since: 16 Aug 2005
Location: UK
Posts: 635
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This is the only error code I get: No sensors are called out.
• U0159-87 (2E) Lost communication with parking assist control module - Bus signal/message failure - missing a message
It is a rear sounder noise and is constant, not beeping. 1998 Defender 110 TUM HS FFR Hard Top XD WOLF
2016 Discovery 4 HSE
1982 Series 3 2.25 Petrol Hard top- Oscar, as featured in Classic Land Rover Magazine for 7 months
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| 12th Jan 2021 12:27 pm |
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Prette
Member Since: 16 Mar 2020
Location: Previously Stoke-ST4 (pre-pandemic), Mostly The Hague (NL) partially Lyngby (DK) certainly somewhere
Posts: 160
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I am no expert here but if your code reads Quote:Lost communication with parking assist control module
I suppose you are not reading the code from the parking assist control module. (I assume the PDC module cannot loose communication with itself  ).
You are probably reading the code from Instrument Cluster module or some other module, which then can loose communication with the PDC module.
Perhaps you can start checking the connections going to the PDC module, which is located on the left side of the boot behind the plastic trim. See if there is any sign of corrosion in the terminals.
You should absolutely follow the advice from Pete K and see the live stream data from the PDC module (check the sensors signals). There could also be an issue with the front buzzer, if this fails, it will buzz the rear buzz to acknowledge that (again, this information will be available when you read the data from the PDC module).
Please, anyone feel free to correct me if I am wrong in any of the above.
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| 12th Jan 2021 12:56 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10359
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I had a problem with one.
When it was below 0C, water in the sensor froze and it worked.
When it was liquid it didn't work
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| 12th Jan 2021 1:01 pm |
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RRUK
Site Supporter
Member Since: 16 Aug 2005
Location: UK
Posts: 635
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Prette wrote:I am no expert here but if your code reads Quote:Lost communication with parking assist control module
I suppose you are not reading the code from the parking assist control module. (I assume the PDC module cannot loose communication with itself ).
You are probably reading the code from Instrument Cluster module or some other module, which then can loose communication with the PDC module.
Perhaps you can start checking the connections going to the PDC module, which is located on the left side of the boot behind the plastic trim. See if there is any sign of corrosion in the terminals.
You should absolutely follow the advice from Pete K and see the live stream data from the PDC module (check the sensors signals). There could also be an issue with the front buzzer, if this fails, it will buzz the rear buzz to acknowledge that (again, this information will be available when you read the data from the PDC module).
please, anyone feel free to correct me if I am wrong in any of the above.
So, that fault code was from the IID tool when I read all faults. I used the IID tool to show Live Value of each sensor and it showed them all as working (as far as I can tell, although I am not an IID expert)
I've not looked at the PDC module itself in the rear boot corner yet. 1998 Defender 110 TUM HS FFR Hard Top XD WOLF
2016 Discovery 4 HSE
1982 Series 3 2.25 Petrol Hard top- Oscar, as featured in Classic Land Rover Magazine for 7 months
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| 13th Jan 2021 1:03 pm |
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